Many consider rising before the sun to attack the cliffs. a. participle b. gerund c. infinitive

Assuming the underlined word is 'rising,' the correct answer is B. gerund.

Although gerunds and participles look the same (both end in - ing), their function in the sentence is definitely not the same. Whereas participles function as either adjectives or adverbs, gerunds function as nouns, which is the case here. Infinitives have a specific form: TO + verb, so C is incorrect too.